Side bearing for truck-bolsters.



Patnted June 4, law.

E. F. GDLTRA.

SIDE BEARING FOB TRUCK BOLSTERS.

ion filed Mar. 16, 1897.)

(No Model.)

WITNESSES wa /A i:

NITED STATES PATENT OFFICE.

EDWARD F. GOLTRA, OF ST. LOUIS, MISSOURI.

SIDE BEARING FOR TRUCK-BOLSTERS.

SPECIFICATION formingpart of Letters Patent No. 675,727, dated June 4:,1901.

Application filed March 15, 1897. Serial No. 627,641. (No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD F. GOLTRA, a citizen of the United States,residing at St. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Side Bearings for Truck-Bolsters; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to truck-bolsters for railway-cars; and its purposeis to provide a truck-bolster with readily-removable side bearingsadjustable vertically and replaceable when worn or otherwise damaged.

In the accompanying drawings, Figure 1 is a view in perspective of atruck-bolster with one side bearing in position thereon and the otherremoved to more clearly show the supporting cage or holder. Fig. 2 is atransverse vertical section through one of the side bearings and itssupporting cage or holder, and

Fig. 3 is a like view illustrating a modified form.

The reference-numeral 1 designates a truckbolster provided with theusual columnguides 2 and tubular center bearing 3, braced or reinforcedby radially-diverging webs 4 and adapted to receive the king-pin of thebody-bolster.

In the form illustrated in Figs. 1 and 2 the side bearing is providedwith a stem 12, constructed to set into a cage or holder 5 and having awear or hearing plate 11, rounded or convex upon its upper surface andextending beyond the edge of the cage or holder, so as to constitute anextended bearing-surface.

Instead of making the stem of the side bearo ing to set within theholder I may, as illustrated in Fig. 3, make said stem hollow, so as tofit over a projection 6 upon the upper surface of the bolster, in whichcase the projection 6 serves as a holder for-the hollow shank 13. Ineither-case I provide for vertical adjustability of the side bearing.The adjustment may be obtained by means of shims or liners 8 9, placedwithin the hollow cage or holder of Fig. 2, or by annular shims orlinerslt 15, placed about the holder 6 of Fig. 3. cated in Fig. 3, maybe employed for either side bearing, and said wear-plates may be removedand replaced by others when desired, either for purposes of renewing thewearingsurface or substituting a thicker wearingplate for purposes ofregulating the height of the bearing.

It will be apparent that the side hearings in either case are not onlyreadily removable from their cages or holders, and therefore capable ofbeing renewed when broken or unduly worn, but that they are also capableof vertical adj ustability, permitting compensation for wear andadapting them also for use to the best advantage in instances where thebody-bolster above varies in height from a given standard.

As indicated by the dotted line 10 in Fig. 2, the side hearing may havea recess for the reeeption of cotton-waste adapted to be saturated withoil, so as to furnish a lubricant to the bearing-surface 11.

In each form I provide an engagement betweenthe bolster and the sidebearings comprisinga socket upon one of the parts and a cooperatingprojection on the other part. In Fig. 2, for instance, the stem 12 onthe side bearing engages a socket formed by the cage or holder 5 on thebolster, while in Fig. 3 the projection 6 on the bolster engages thehollow stem 13 on the side hearing, which hollow stem constitutes asocket.

While the specific construction illustrated in the drawings ispracticable and satisfactory, it will be apparent that both the sidebearings and cage or holder may be varied in form from the illustrationin the drawings, and my invention comprehends all such changes ormodifications of the invention as may fairly fall within the scope ofthe following claims.

Having thus described my invention, what I claim is- 1. The combinationwith a truck-bolster, and a side bearing, a socket upon one of saidMoreover, wear-plates 16, as indiparts and a projection upon the otherto enerally beyond the holder, and a depending gage said socket, saidside bearing having a stem setting into said holder. 10 head projectinglaterally of the engaging In testimony whereof I aflix my signaturemembers. in presence of two witnesses.

2. The combination with a truck-bolster EDWARD F. GOLTRA. provided withhollow cages or holders, of re- Witnesses: movable side bearings eachcomprising a JOHN C. PENNIE, rounded head or bearing-plate projectinglat- J. A. GOLDSBOROUGIL

